Public bug reported:
Blank Screen initiates after timeout (usually 5 minutes but set to 1
minute to replicate this bug), screen goes blank on both laptop and
external Dell, but immediately comes back on. Whilst it is blanking, any
running applications show their windows (which is not usual) but it
appears gnome-shell and the window manager are not running (no dash and
no window decorations).
Disconnecting external monitor exhibits the same Blank Screen failure on
the laptop screen.
I have turned Automatic Screen Lock off for now to remove that as a
cause.
I have also had intermittent failure of gnome-shell.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Uname: Linux 5.4.0-33-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri May 29 09:07:11 2020
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
v4l2loopback, 0.12.3, 5.4.0-31-generic, x86_64: installed
v4l2loopback, 0.12.3, 5.4.0-33-generic, x86_64: installed
virtualbox, 6.1.6, 5.4.0-31-generic, x86_64: installed
virtualbox, 6.1.6, 5.4.0-33-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (rev 02)
(prog-if 00 [VGA controller])
Subsystem: Lenovo UHD Graphics 620 (Whiskey Lake) [17aa:2292]
InstallationDate: Installed on 2020-02-25 (93 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QFCTO1WW
ProcEnviron:
LANGUAGE=en_AU:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_AU.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-33-generic
root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to focal on 2020-05-01 (27 days ago)
dmi.bios.date: 03/18/2020
dmi.bios.vendor: LENOVO
dmi.bios.version: N2HET47W (1.30 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QFCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN2HET47W(1.30):bd03/18/2020:svnLENOVO:pn20QFCTO1WW:pvrThinkPadX1Yoga4th:rvnLENOVO:rn20QFCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct31:cvrNone:
dmi.product.family: ThinkPad X1 Yoga 4th
dmi.product.name: 20QFCTO1WW
dmi.product.sku: LENOVO_MT_20QF_BU_Think_FM_ThinkPad X1 Yoga 4th
dmi.product.version: ThinkPad X1 Yoga 4th
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.4-2ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubuntu
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1881212
Title:
Blank Screen initiates then fails
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https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1881212/+subscriptions
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